JPH0275827A - Heating device - Google Patents

Abstract

PURPOSE:To permit the provision of an appearance same as charcoal without effecting any combustion by a method wherein a carbonized natural wood type silicon carbide heat generating body, whose area including the surface thereof is constituted of a silicon carbide layer, is received in a vessel and heat generating bodies are arranged near the heat generating body to heat the same. CONSTITUTION:A heating device 10 is constituted of a vessel 11, made of earthenware and the like, and heating bodies 12, arranged in the vessel 11 and formed of metallic coils, silicon carbide material or the like. A power source is connected to the heating bodies 12 and a voltage is impressed thereon from the power source. A silicon carbide heat generating body 20 is received in the vessel 11 of the heating device 10 and is heated by the heating bodies 12 to a red-hot temperature higher than 800 deg.C whereby radiates much amount of far infrared rays and heats bodies to be heated. The silicon carbide heat generating body 20 shows the appearance of a carbonized natural wood while a silicon carbide layer 21 is formed in the area thereof including at least the surface thereof. The silicon carbide layer 21 is preferable to contain 10-60weight% of silicon in order to restrain the generation of cracks accompanied by the repetition of heat generation as well as consumption due to oxidizing and improve the deterioration of heat conduction accompanied by the existence of voids.

Description

[Detailed description of the invention]

+l) Purpose of the Invention [Industrial Application Field] The present invention relates to a heating device, and particularly to a heating device that includes a silicon carbide heating element formed by carbonizing natural wood and then forming a silicon carbide layer on a region including the surface of the natural wood. The present invention relates to a heating device consisting of: [Prior Art] Conventionally, there has been a heating device that carbonizes natural wood and burns the carbonized natural wood (hereinafter also referred to as "carbonized natural wood") in a furnace. [Problems to be solved] However, in this case, the carbonized natural wood is gradually consumed as it burns, so it is necessary to replenish the carbonized natural wood intermittently in order to sustain the (i1 heat generation), and ( ii
There was also the drawback that ash produced as a result of combustion of carbonized natural wood had to be removed. For this reason, a heating device formed by simply arranging a heating wire or a gas burner inside the container has been proposed, but with this,
fi) Even if it is possible to heat the object to be heated, there is a drawback that the effect of heating with charcoal cannot be achieved, and (iii) If the supply of voltage to the heating wire or the supply of fuel gas to the gas burner is stopped, the heating wire Alternatively, heating by the gas burner is stopped and the temperature of the heated object, such as the iron pot, rapidly decreases, resulting in (iii) rust easily forming inside the heated object, such as the iron pot. Therefore, in order to solve these drawbacks, the present invention provides a heating device comprising a silicon carbide heating element containing carbonized natural wood on which a silicon carbide layer is formed on at least a region including the surface. (2) Structure of the invention [Means for solving the problems] The means for solving the problems provided by the present invention are as follows: (a)
(b) a silicon carbide heating element containing carbonized natural wood with a silicon carbide layer at least in a region including the surface thereof and housed in a container; and a heating element disposed in the vicinity of a silicon heating element. [Function] The heating device according to the present invention includes (a silicon carbide heating element containing carbonized natural wood whose area including at least the surface thereof is a silicon carbide layer and housed in a container; and fb). In order to heat the silicon carbide heating element, the heating element is provided near the silicon carbide heating element.
(i) It has the effect of preventing carbonized natural wood from being burned and wasted due to heating, and (i) It has no effect of preventing ash from being generated from carbonized natural wood and avoiding the work of removing it. In addition, it acts to provide the same taste as a heating element made of fiii natural wood charcoal (i.e. charcoal), and furthermore, when heating by the fivl heating element is stopped, the temperature of the silicon carbide heating element rapidly decreases. This also serves to prevent the temperature of the object to be heated from rapidly decreasing due to the stop of heating by the heating element. [Example] Next, an example of the heating device according to the present invention will be described. However, the examples described below are described to facilitate or promote the understanding of the present invention, and are not described to limit the present invention. FIG. 1 is a perspective view for explaining one embodiment of the heating device according to the present invention, in which a heating element 12 generates heat by being connected to a power source and heats a silicon carbide heating element. 2 is an enlarged perspective view of a part of the embodiment shown in FIG. 1, showing the structure of the silicon carbide heating element. FIG. 4 is an enlarged perspective view of a part of the embodiment, showing an example of the heating body 12. FIG. 4 is a perspective view for explaining another embodiment of the heating device according to the present invention. The figure shows a case in which the heating element 12 is connected to a fuel gas source and ignited to generate heat and heat a silicon carbide heating element. First, referring to FIG. The structure and operation of one embodiment will be described in detail.The heating device according to the present invention is a heating device in which a metal coil or silicon carbide is connected to the inside of a container 11 made of ceramic or other suitable material. A heating element 12 made of a quality material or the like is provided.A suitable power source (not shown) can be connected to the heating element 12, and an appropriate voltage is applied from the power source during use. A typical silicon carbide heating element is housed in a container 11 at heating device pressure, and when heated to a temperature of 800°C or higher by the heating element 12, it becomes red hot and emits a large amount of far infrared rays. The silicon carbide heating element has the appearance of carbonized natural wood, and has a silicon carbide layer 2 over at least a region including the surface.
1 is formed. The silicon carbide layer 21 may contain 10 to 60% by weight of silicon, if desired, in order to suppress the occurrence of cracks and oxidative consumption caused by repeated heat generation, and to improve the reduction in thermal conductivity caused by the presence of pores. It may be contained. The reason why the silicon content is set to 10 to 60% by weight is that (il) If it is less than 10% by weight, there will be many voids and the thermal conductivity will be low, so the efficiency as a single heating element will be low, and it will repeatedly generate heat. The problem is that it is not possible to sufficiently suppress the occurrence of cracks and oxidative wear associated with
If the amount of il exceeds 60% by weight, the appearance of natural wood charcoal (ie, charcoal) cannot be maintained. The heating device according to the present invention operates as follows. That is, when the heating element 12 is made to generate heat by connecting an appropriate power source (not shown) and applying an appropriate voltage, the silicon carbide heating element is indirectly heated to a temperature of 800° C. or more. . As a result, the silicon carbide heating element becomes red hot and emits a large amount of far infrared rays, so the heating device pressure has the appearance of heating with natural wood charcoal (i.e. charcoal).
A heated object (not shown) is heated. On the other hand, when the heating element 12 stops generating heat by removing the voltage applied to the heating element 12, the silicon carbide heating element is slowly cooled down by natural cooling. This prevents the temperature of the heated object from dropping rapidly. In the above, since the heating state of the heating element 12 and the heating state of the silicon carbide heating element U have different appearances, there may be cases where the heating effect with natural wood charcoal (i.e. charcoal) cannot be fully achieved. In order to avoid this, the heating element 12
may be formed as follows by the silicon carbide exothermic process shown in FIG. That is, the silicon carbide exothermic material has the appearance of carbonized natural wood, and a silicon carbide layer 21 is formed over at least a region including the surface. Silicon carbide layer 21 includes electrode rod 22A. 22B is provided, and when connected to an appropriate power source, an appropriate voltage is supplied. Here, the silicon carbide layer 21 may contain 10 to 60% silicon, if desired, in order to suppress the occurrence of cracks and oxidative consumption due to repeated heat generation, and to improve the decrease in thermal conductivity caused by the presence of pores. It may be contained by weight%. The reason why the silicon content is set to 10 to 60% by weight is as follows: (i) If it is less than 10% by weight, there will be many voids and the thermal conductivity will be low, so the efficiency as a heating element will be low and repeated heat generation will occur. On the other hand, if the content exceeds 60% by weight, the appearance of natural wood charcoal (i.e. charcoal) cannot be maintained. Furthermore, with reference to FIG. 4, the structure and operation of another embodiment of the heating device according to the present invention will be described in detail. The recess is a heating device according to the present invention, in which a heating body 32 such as a gas burner is disposed inside a container 31 made of ceramic or other suitable material. In the heating device container 31, the above-mentioned silicon carbide heating element is housed on a support member 33 disposed above the heating element 32, and is heated to a temperature of 800°C or higher by the heating element 32. At this time, it becomes red hot and radiates a large amount of far infrared rays to heat an object to be heated (not shown). The heating device according to the present invention operates as follows. In other words, when the heating element 32 is made to generate heat by supplying fuel gas and igniting it, the silicon carbide exothermic suspension becomes 800
Heated indirectly to temperatures above ℃. As a result, for heating devices, the silicon carbide heating element becomes red hot and emits a large amount of far infrared rays, so it can heat the object to be heated (not shown) while giving the appearance of heating with natural wood charcoal (i.e. charcoal). Heat. On the other hand, when the heat generation of the heating element 32 is stopped by stopping the supply of fuel gas to the heating element 32, the silicon carbide heat generating material is slowly cooled down by natural cooling. This prevents the temperature of the heated object (not shown) from dropping rapidly. In the heating device according to the present invention, the silicon carbide heat generating material has the appearance of carbonized natural wood, so it is possible to create an atmosphere as if heat is being generated by natural wood charcoal. In addition, with the heating device pressure according to the present invention, the silicon carbide heat-generating material is not consumed due to heat generation, so ash and the like are not generated, and the management thereof can be facilitated. Furthermore, with reference to FIG. 2, the details of the method for manufacturing the silicon carbide heating element will be explained. Natural wood is cut into desired sizes and carbonized by heating in a non-oxidizing atmosphere. Carbonized natural wood is made of molten silicon, which has a melting point (1420
It is brought into contact with silicon heated to a temperature higher than 30°F (°C) to cause a reaction. As a result, the carbonized natural wood is converted into silicon carbide from the surface toward the inside, and as a result, a silicon carbide layer 21 is formed in a region including the surface. After confirming that the silicon carbide conversion has been completed to a desired degree, the natural wood that has been converted to silicon carbide is removed from contact with the molten silicon, and is naturally cooled and dried. Through the above steps, a silicon carbide heating element can be created. Further, in the same manner as described above, silicon monoxide (SiO) vapor is supplied to the carbonized natural wood in a closed environment. As a result, the carbonized natural wood is sequentially converted into silicon carbide from the surface toward the inside, and a silicon carbide layer 21 is formed in the area including the surface, resulting in a silicon carbide-based heat generating layer. In addition, with reference to FIG. 3, the details of the method for producing a silicon carbide exothermic material will be explained. In this case, electrode rods 22A and 22B are bonded to carbonized natural wood using carbon paste or the like, and then silicon carbide is formed as described above to form a silicon carbide layer 21 on the area including the surface. do it. In addition, the silicon carbide heating element as well as the intestine may be impregnated with silicon, if desired, in order to suppress the occurrence of cracks and oxidative wear caused by repeated heat generation, and to improve the reduction in heat conduction caused by the presence of pores. By doing so, the silicon carbide layer 21 may contain 10 to 60% by weight of silicon. (3) Effects of the Invention As is clear from the above, the heating device according to the present invention (contains carbonized natural wood whose area including at least the surface thereof is a silicon carbide layer, and is housed in a container) Since it is equipped with a silicon carbide heating element and a heating element disposed near the silicon carbide heating element in order to heat the fbl silicon carbide heating element, the fil carbonized natural wood is heated. It has the effect of preventing carbonized natural wood from burning and wasting away, and it also has the effect of preventing ash from being generated from carbonized natural wood and avoiding the work of removing it. It has the effect of providing the same taste as a heating element made of charcoal (i.e. charcoal), and furthermore, it can avoid a rapid drop in the temperature of the silicon carbide heating element when heating by the heating element is stopped. This has the effect of preventing the temperature of the object to be heated from dropping rapidly as the heating by the heating element stops.

[Brief explanation of the drawing]

FIG. 1 is a perspective view for explaining one embodiment of the heating device according to the present invention, FIG. 2 is a perspective view showing an enlarged part of the embodiment in FIG. 1, and FIG. FIG. 4 is a perspective view showing an enlarged part of the embodiment, and FIG. 4 is a perspective view for explaining another embodiment of the heating device according to the present invention. 10・・・・・・・・・・・・・・・・・・・・・
Heating device 11・・・・・・・・・・・・・・・・・・
・・・Container 12・・・・・・・・・・・・・・・・・・
・・・Heating body 20, 2OA・・・・・・・・・・・・
......Silicon carbide heating element 21...
・・・・・・・・・・・・・・・・Silicon carbide layer 22A,
22B・・・・・・・・・・・・・・・・・・ Electrode rod 30・・・・・・・・・・・・・・・・・・・・・
・Heating device 31・・・・・・・・・・・・・・・・・・
・・・Container 32・・・・・・・・・・・・・・・・・・
・・・・・・Heating body 33・・・・・・・・・・・・・・・
... Supporting member patent applicant Toshiba Ceramics Co., Ltd. Representative Patent Attorney Takao Kudo Figure 1 Figure 3 22A Figure 4 Procedural Amendment (Mutsu) 1. Indication of the case 1988 Patent application No. 228131 2, name of the invention Heating device 3, person making the amendment Relationship to the case Patent applicant address 26-2 Shinjuku-chome, Shinjuku-ku, Tokyo Name Title
Toshiba Ceramics Corporation Representative Kiyohiko Kasuya 4, Agent 166 Telephone 03-3
15-3015 Address: 30-21 Koenji Minami, Suginami-ku, Tokyo - Name (9317): Takao Kudo, patent attorney. □1-Me1 5, Number of claims increased due to amendment 06,
Description subject to amendment (correction) ■1 Name of the invention Heating device 2 Claims (1) (a) A small (including a surface area containing carbonized natural wood with a silicon carbide layer) A heating element comprising: a silicon carbide heating element housed in a container; and a heating element disposed near the silicon carbide heating element in order to heat the silicon carbide heating element. Apparatus. (2) A part of the silicon carbide heating element is provided with an electrode rod disposed on the silicon carbide layer and for applying a voltage, and is used as a heating element. The heating device according to claim 1). (3) The heating device according to claim 1 or claim 2, which contains 10 to 60% by weight of silicon based on the silicon carbide layer. 3. Detailed Description of the Invention (1) Purpose of the Invention [Industrial Application Field] The present invention relates to a heating device, and in particular, the present invention relates to a heating device, and in particular, to a heating device that is made by carbonizing natural wood and forming a silicon carbide layer on a region including the surface thereof. This invention relates to a heating device equipped with a silicon carbide heating element. [Prior art] Conventionally, as a heating device using carbonized natural wood (hereinafter also referred to as "carbonized natural wood"), carbonized natural wood What was used was a device in which natural wood was actually burned in a furnace to heat the object to be heated. [Problems to be solved] However, in conventional heating devices, the carbonized natural wood was burned as it burned. Since it is gradually consumed, (i) it is necessary to replenish the carbonized natural wood intermittently into the furnace in order to sustain the heat generation, and (ii) the ash produced as the carbonized natural wood burns. It also had the disadvantage that it had to be removed from the furnace intermittently.In order to eliminate these disadvantages, heating devices were also proposed in which heating wires or gas burners were simply placed inside the container, but this did not work. However, (i) although it is possible to heat the object to be heated, it cannot achieve the effect of heating with charcoal (i.e. carbonized natural wood), and (ii)
l When the supply of voltage to the heating wire or the supply of fuel gas to the gas burner is stopped, the heating by the heating wire or gas burner is stopped, so due to the small amount of heat stored in the heating wire or gas burner, There is a drawback that the heat supply is stopped in a short period of time, and the temperature of the heated object such as an iron pot drops rapidly, and as a result, chains are likely to occur inside the heated object such as an iron pot. There were drawbacks. Therefore, in order to solve these drawbacks, the present invention provides a heating device comprising a silicon carbide heating element containing carbonized natural wood on which a silicon carbide layer is formed on at least a region including the surface. This is what I am trying to do. (2) Structure of the invention [Means for solving the problems] The means for solving the problems provided by the present invention are as follows:
A silicon carbide heating element containing carbonized natural wood with a silicon carbide layer at least in a region including the surface thereof and housed in a container; [Function] The heating device according to the present invention is a heating device comprising a heating element disposed close to a high-quality heating element. It includes a silicon carbide heating element which contains carbonized natural wood and is housed in a container; (
(ii) It has the effect of preventing carbonized natural wood from being burned and wasted due to heating, and (ii) It does not have the effect of preventing ash from being generated from carbonized natural wood and avoiding work such as removing it. In addition, (iii) it acts to provide a heating atmosphere similar to that of a heating element made of natural wood charcoal (i.e. charcoal), and furthermore (ivl) when heating by the heating element is stopped, the temperature of the silicon carbide heating element rapidly increases. This prevents the temperature of the heated object from dropping rapidly due to the stop of heating by the heating element. [Example] Next, regarding the heating device according to the present invention. , Examples will be given and explained in detail with reference to the accompanying drawings. However, the examples described below are not intended to facilitate or promote the understanding of the present invention. hand,
It is not described to limit the invention. FIG. 1 is a perspective view for explaining a first embodiment of a heating device according to the present invention, in which a heating element 12 generates heat by being connected to a power source. This figure shows the case of heating a silicon carbide exothermic material. FIG. 2 is an enlarged perspective view of a part of the embodiment shown in FIG. 1, showing the structure of the silicon carbide heating element. FIG. 3 is an enlarged perspective view of a part of the embodiment shown in FIG. ing. FIG. 4 is a perspective view for explaining a second embodiment of the heating device according to the present invention, in which the heating body 12 is connected to a fuel gas source and generates heat by igniting the supplied fuel gas. The figure shows the case of heating silicon carbide heat-generating material. 5(a) and 5(b) are perspective views for explaining a third embodiment of the heating device according to the present invention, and correspond to the embodiment in FIG. 1 and the embodiment in FIG. 4, respectively. This figure shows a case in which a plurality of silicon carbide heating elements are assembled and joined to each other at intersections. First Embodiment First, the configuration of a first embodiment of the heating device according to the present invention will be described in detail with reference to FIGS. 1 and 2. The container is a heating device according to the present invention, in which a heating body 12 made of a metal coil or a silicon carbide material is disposed inside a container 11 made of ceramic or other suitable material. . An appropriate power source (not shown) can be connected to the heating body 12, and an appropriate voltage is applied from the power source during use. This is a silicon carbide heating element housed in a heating device according to the present invention;
When heated to a temperature of 00° C. or higher, it becomes red-hot and radiates a large amount of far-infrared rays to heat an object to be heated (not shown). The silicon carbide heating element has the appearance of carbonized natural wood, and has a silicon carbide layer 2 over at least the area including the surface.
1 is formed. The silicon carbide layer 21 may contain 10 to 60% silicon by weight, if desired, in order to suppress the occurrence of cracks and oxidative consumption due to repeated heat generation, and to improve the reduction in thermal conductivity caused by the presence of pores. % may be contained. Here, the reason why the silicon content is set to 10 to 60% by weight is that (il) If it is less than 10% by weight, there will be many voids and the thermal conductivity will be low, so the efficiency as a heating element will be low, and The reason for this is that the occurrence of cracks and oxidative wear due to repetition of the process cannot be sufficiently suppressed, and the purpose of containing silicon is essentially lost.
If it exceeds 0% by weight, the appearance of natural wood charcoal (i.e. charcoal) cannot be maintained. Further, the operation of the first embodiment of the heating device according to the present invention will be described in detail with reference to FIGS. 1 and 2. When the heating element 12 is made to generate heat by connecting an appropriate power source (not shown) and applying an appropriate voltage, the silicon carbide heating element receives conduction heat or radiant heat from the heating element 12, and the temperature reaches 800°C or higher. heated indirectly to a temperature of The silicon carbide heating element accordingly becomes red hot and radiates a large amount of far infrared rays, so it heats the object to be heated (not shown) while giving the appearance of heating with natural wood charcoal (i.e. charcoal). do. On the other hand, when the heating element 12 stops generating heat by removing the voltage applied to the heating element 12, the silicon carbide heating element gradually slows down while resisting natural cooling due to its heat storage effect. is cooled to Thereby, the temperature of the object to be heated does not drop rapidly, and it is possible to suppress the occurrence of rust on the object to be heated. 1st Japanese Example Note that in the above description, the heating body 12 and the silicon carbide heat generating body are connected because the silicon carbide heat generating body generates heat by receiving conduction heat or radiant heat of the heating body 12. There may be cases where the heating effect of natural wood charcoal (i.e. charcoal) cannot be fully achieved because the appearance of the charcoal is different from that of the charcoal. In order to avoid this, the heating body 12 may be formed, for example, from a silicon carbide heating element shown in FIG. Silicon carbide heat generation is caused by electrode rod 2 against silicon carbide layer 21.
2A and 22B are provided and generate heat spontaneously when connected to an appropriate power source, so that the effect of heating using natural wood charcoal (that is, charcoal) can be fully achieved. Incidentally, like the silicon carbide heating element, the silicon carbide heating element has the appearance of carbonized natural wood. Here, silicon carbide layer 21 may contain 100% silicon, if desired, in order to suppress the occurrence of cracks and oxidative consumption due to repeated heat generation, and to improve the decrease in thermal conductivity caused by the presence of pores. It may be contained in an amount of up to 60% by weight. The reason why the silicon content is 10 to 60% by weight is (il 10
If it is less than % by weight, there will be many voids and the thermal conductivity will be low, so the efficiency as a heating element will be low, and it will not be possible to sufficiently suppress the occurrence of cracks and oxidative consumption due to repeated heat generation, and the silicon On the other hand, if the content exceeds 60% by weight, the appearance of natural wood charcoal (that is, charcoal) cannot be maintained. In addition, the configuration of a second embodiment of the heating device according to the present invention will be described in detail with reference to FIG. The heating device according to the present invention includes a heating body 32 such as a gas burner placed inside a container 31 made of ceramic or other suitable material. In the container 31 equivalent to the heating device according to the present invention, the heating body 3
The above-mentioned silicon carbide heating element is housed on a support member 33 disposed above the heating element 32, and when heated to a temperature of 800° C. or higher by the radiant heat generated by the heating element 32, it becomes red-hot. , radiates a large amount of far infrared rays to heat an object to be heated (not shown). Further, with reference to FIG. 4, the operation of the second embodiment of the heating device according to the present invention will be described in detail. When the heating element 32 is made to generate heat by supplying fuel gas and igniting it, the silicon carbide heating element receives radiant heat from the heating element 32 and is indirectly heated to a temperature of 800° C. or higher. The silicon carbide heating element accordingly becomes red hot and radiates a large amount of far infrared rays, so it heats the object to be heated (not shown) while giving the appearance of heating with natural wood charcoal (i.e. charcoal). do. On the other hand, when the heat generation of the heating element 32 is stopped by stopping the supply of fuel gas to the heating element 32, the silicon carbide heating element slowly cools down while resisting natural cooling due to its heat storage effect. be done. As a result, the temperature of the heated object (not shown) does not drop rapidly, and it is possible to suppress the occurrence of rust on the heated object. 3-1-Concurrently, the structure and operation of the third embodiment of the heating device according to the present invention will be described in detail with reference to FIG. The third embodiment is different from the first embodiment except that a plurality of silicon carbide heating elements are assembled so as to intersect at one place and are joined to each other at the intersection to form a pyramid shape. It has the same configuration as the second embodiment. Therefore, the third embodiment can be placed directly on an electric stove (see Fig. 5 (al) or gas stove (see Fig. 5 f)) at the dining table of a general household to enjoy the elegance of heating using natural wood charcoal. When creating, except for the function of making it easier to handle, 1. It has substantially the same effect as the second embodiment. Here, in order to keep the explanation concise, we will explain the first part. By assigning the same reference numerals to members corresponding to those included in the second embodiment, redundant explanation regarding the structure and operation will be omitted. In the first to third -M examples, in the heating device pressure according to the present invention, the silicon carbide heating element is
Since the exterior has the appearance of charred natural wood, it can create an atmosphere as if heat is being generated by natural wood charcoal. In addition, with the heating device pressure according to the present invention, the silicon carbide heating element is not consumed due to heat generation, so no ash is generated, and its management or cleaning is facilitated. can. (Method of Manufacturing a Silicon Carbide Heating Element) Finally, the details of the method of manufacturing a silicon carbide heating element will be described with reference to FIG. Natural wood is cut into desired sizes and carbonized by heating in a non-oxidizing atmosphere. Carbonized natural wood is made of molten silicon (i.e. melting point f142
The reaction is caused by contacting with silicon heated to a temperature of 0° C. or higher. As a result, the carbonized natural wood is gradually converted into silicon carbide from the surface toward the inside, and as a result, a silicon carbide layer 21 is formed in the area including the surface. After confirming that the silicon carbide conversion has been completed to a desired degree, the natural wood that has been converted to silicon carbide is removed from contact with the molten silicon, and is naturally cooled and dried. Through the above steps, a silicon carbide heating element is created. Furthermore, vapor of silicon monoxide (SiO) is supplied in a closed environment to the carbonized natural wood in the same manner as described above. As a result, the carbonized natural wood is gradually converted into silicon carbide from the surface toward the inside, and a silicon carbide layer 21 is formed in the region including the surface. Through the above steps, a silicon carbide heating element is created. (Method for manufacturing silicon carbide heating element 2OA) In addition, with reference to FIG. 3, the details of the manufacturing method for the silicon carbide heating element 2OA will be described. In this case, the electrode rods 22A and 22B are bonded to the carbonized natural wood using carbon paste or the like, and then the area including the surface is converted to silicon carbide in the same way as for forming a silicon carbide heating element as described above. Silicon carbide layer 21 may be formed thereon. (Silicon carbide heating element practice, modification of production method) In addition, the silicon carbide heating element 20.20A suppresses the occurrence of cracks and oxidative wear due to repeated heat generation, and suppresses oxidative wear due to the presence of pores. In order to improve the reduction in heat conduction, if desired,
By impregnating silicon, the silicon carbide layer 21 may contain 10 to 60% by weight of silicon. The reason why the content of silicon carbide is 10 to 60% by weight should be clear from the above description, so it will not be repeated. (3) Effect of the invention As is clear from the above, the heating device according to the present invention has (
A silicon carbide heating element containing carbonized natural wood whose surface including at least the silicon carbide layer is housed in a container; Since it is equipped with a heating element disposed near the silicon heating element, it has the effect of preventing carbonized natural wood from being burned and wasted due to heating, and furthermore, ) It has the effect of preventing the generation of ash from carbonized natural wood and avoids the work of removing it, and (iii) It has the effect of providing the same taste as a heating element made of natural wood charcoal (i.e. charcoal). Furthermore, when the heating by the heating element is stopped, the temperature of the silicon carbide heating element can be prevented from rapidly decreasing, and the temperature of the heated element can be prevented from rapidly decreasing as the heating by the heating element is stopped. It has the effect of preventing a decrease in

[Brief explanation of the drawing]

FIG. 1 is a perspective view for explaining the first embodiment of the heating device according to the present invention, FIG. 2 is a perspective view showing a part of the embodiment in FIG. 1 on an enlarged scale, and FIG. FIG. 4 is a perspective view showing an enlarged part of the embodiment; FIG.
FIG. 5 is a perspective view for explaining an embodiment of (al (b)
FIG. 1 is a perspective view for explaining a third embodiment of the heating device according to the present invention. lO・・・・・・・・・・・・・・・・・・・・・
・Heating device 11・・・・・・・・・・・・・・・・・・
・・・Container 12・・・・・・・・・・・・・・・・・・
・・・・・・Heating body 20.2OA・・・・・・・・・・・・
......Silicon carbide heating element 21...
......Silicon carbide layer 22/',,
22B・・・・・・・・・・・・ Electrode ring 30・・
・・・・・・・・・・・・・・・・・・・Heating device 31・・・・・・・・・・・・・・・・・・・Container 32...・・・・・・・・・・・・・・・・・・Heating body 33・・・・・・・・・・・・・・・・・・・・・
・Supporting member patent applicant Toshiba Ceramics Co., Ltd. Representative Patent Attorney Takao Kudo Figure 1 Figure 3 Figure 2A Figure 4 Figure 5

Claims (2)

[Claims] (1) (a) A silicon carbide heating element containing carbonized natural wood with a silicon carbide layer at least in its surface area, and housed in a container; (b) a silicon carbide heating element; A heating device comprising a heating element disposed near a silicon carbide heating element for heating. (2) A part of the silicon carbide heating element is provided with an electrode rod disposed on the silicon carbide layer and for applying a voltage, and is used as a heating element. Heating device as described in section. (3) 10 to 60% silicon to the silicon carbide layer
% by weight of the heating device according to claim (1) or (2).